More specifically, it measures consistency between batches. Compaction factor test workability test of fresh concrete. Every student is required to submit his own separate report for each test conducted. First test is after seven day concrete have been harden and second test is after 28 day concrete have been harden. Compressive testing machine ctm is the most basic machine used for testing of concrete cubes in the construction industry. The number of revolutions at mixing speed shall not exceed 150 per specification 2461. Concrete slump test for workability procedure and results. Special project report spr 195 final report on a laboratory tnvesttga. Slump test is the most commonly used method of measuring consistency of concrete which can be employed either in laboratory or at site of work. Importance of this test, procedure with lab reports and sample calculation. This machine tests specimens of concrete to find their compressive strength.
Moreover, the 2000 kn compression testing machines, which are used by most of the laboratories in hong kong, can be used to test high strength concrete if. Quality control of construction testing of concrete cubes. Also, soil on which structures are founded can be considered as a structural material as it gets loaded too. Function why cube test is carried out because we want to determine the characteristic strength of the concrete. This report covers the additional cube test results obtained since october 1993 and. Cube test results judges proper concreting at site. Nondestructive test is one of major laboratory tools used to evaluate concrete structure performance and establish compliance for the quality of concrete. The mix design for the study comprised the design of an opc concrete and four pf a. Compressive strength of concrete cube test pdf, procedure. The test is an empirical test that measures the workability of fresh concrete. These tests have been selected to illustrate the basic properties and methods of testing of concrete and steel. Concrete cube testing and maintaining good cube test records does not.
Companies that sample test and report asphalt test results, both in the laboratory and in the field, use the asphalt project module. This test measures the uniaxial compressive strength of concrete cubes which are. Experimental test procedures to determine the compressive strength. Steel, concrete and brick masonry are the major types of structural material used in civil engineering construction. Method of tests for strength of concrete iit kanpur. Lane senior research scientist introduction for rigid pavements, the virginia department of transportation s vdot 1993 road and bridge specifications vdot 1993 specified that the concrete have a 28day compressive strength of 20. Compression test on concrete posted in concrete engineering, project reports email. It is not a suitable method for very wet or very dry concrete. After the sample has been remixed, immediately fill the cube moulds and compact the concrete, either by hand or by vibration. Slump and kelly ball testing would be performed to investigate workability of mixture. The smaller specimens tend to be easier to make and handle in the field and the laboratory.
The bearing surfaces of the testing machine shall be wiped clean and any loose sand or other materials removed from the surface of the specimen which are to be in contact with the compression platens. Compressive strength of concrete cube test provides an idea about all the characteristics of concrete. Concrete slump test or slump cone test is to determine the workability or consistency of concrete mix prepared at the laboratory or the construction site during the progress of the work. Test procedures, sometimes simplified because of time limitation, are mostly those outlined by the american society for testing and materials astm standards. Failure to do this can result in the need to spend even more. Mix the concrete at agitating speed for all revolutions over 150. It does not measure all factors contributing to workability, nor it is always representative of.
Properties of various kinds of above mentioned materials along with its constituents can be assessed by means of various lab and. Concrete mix design a nd trail mixes execution tr no. Specification for moulds for use in tests of cement and concrete. The data used for this lab report was not gathered from the student run experiments, but rather from standardized testing performed by the laboratory professor, to ensure accurate and consistent results. Lab 1 concrete proportioning, mixing, and testing supplemental lab manual prepared by mutlu ozer objectives concepts background experimental procedure report requirements discussion objectives students make concrete according to the mix design. Cylindrical specimens for acceptance testing should be 6 x 12 inch 150 x 300 mm size or 4 x 8 inch 100 x 200 mm when specified. Cube crushing test, ultrasonic pulse test, flexural strength test, equivalent cube test and split cylinder test. Mix the concrete either by hand or in a laboratory batch mixer. How to determine flexural strength test of concrete.
Test procedure and for concrete compressive strength. Introduction the concrete slump test is used for the measurement of a property of fresh concrete. Special project report spr 396 e development bureau. Compressive strength of concrete cube test, procedure. After preparing the ends, a compressive axial load will be applied to the samples at a continuous rate until failure occurs. Concrete slump test is carried out from batch to batch to check the uniform quality of concrete during construction. Root cause analysis of failures in the testing of concrete. Compression testing of concrete cylinders a nd cores rev.
This laboratory manual of nondestructive testing for concrete structure will be used in. Laboratory manual imam abdulrahman bin faisal university. It does not measure or predict in any unique way the strength of the concrete in the structure. Report theiollowmg mformanon shall be included in the report on each test. Three cubes should be tested and their average should be taken as the test result. Characteristic strength of concrete is the strength of concrete specimens casted and tested as per given code of practice and cured for a period of 28 days. Concrete is one of the most widely used construction material throughout the world. This report was initiated by a concrete laboratory report brief given out by professor mark alexander in the civ5002z. In this experiment, we already compress two concrete cube.
Out of many test applied to the concrete, this is the utmost important which gives an idea about all the characteristics of concrete and compressive strength of it. Civil engineering animated videos, civil engineering videos soci. Ti1e compression test on concrete cubes and cylinders is the most commonly used test. This video animation, animated video explains how to flexural strength test on concrete. Chapter 8 standard test procedures tests on cement may 2001 page 8. Pdf this report was initiated by a concrete laboratory report brief given out by.
Any air trapped in the concrete will reduce the strength of the cube. The compaction factor test is carried out to measure the degree of workability of fresh concrete with regard to the internal energy required for compacting the concrete thoroughly. Compressive strength of concrete cube test pdf, procedure, results. In general, the reports should be arranged in the following order. The test is popular due to the simplicity of apparatus used and simple procedure. Laboratory has conducted a study to examine the suitability of using 100 n11n cubes in place. Calculate the area of concrete cube 150 mm 150 mm 22500 mm2 compressive strength of cube load n. As strength is a major factor in a uniform quality control program, mndot requires regular cube strength test results to evaluate trends in the. Department of civil and construction engineering strength. For a private construction materials testing laboratory or central. If the concrete is placed in the work, report both tests on the weekly concrete report form 2448 with a notation of the amount of water, cement or airentraining admixture added. Cube test of concrete and factors affecting concrete compressive strength.
The compressive strength of concrete test at the lab with the definition. Structural concrete properties and practice postgraduate course. According to wikipedia, compressive strength of concrete is defined as the characteristic strength of 150mm size concrete cubes tested at 28 days. It is used in the construction industry, in concrete producing plants and at the construction sites to test the concrete before use. The certified source shall have a mill test report program that is approved by mndot to. By this single test one judge that whether concreting has been done properly or not. Therefore using the method of testing using concrete cubes, the tested compressive strength should be. Filling the cube moulds and compacting the concrete. While the format of test reports can vary from one testing laboratory to the next, each will contain the information needed to determine whether the concrete meets the jobsite requirements. Procedure overview this procedure is to be used for determining the compressive strength of concrete cylinders and cores. Chapter 9 standard test procedures tests on concrete may 2001 page 9.
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